Newell's UTC argues that the mind functions as a single system. He also claims the established cognitive models are vastly underdetermined by experimental data. Therefore, a UTC accounting for the experimental data would provide constraints on the modeling process, resulting in more rigorous and predictive models. A UTC could also be applied as theoretical constructs to a much wider range of cognitive phenomena. When a phenomenon cannot plausibly be explained by the UTC's mechanisms, it could indicate the UTC is wrong.